<template>
    <transition name="popup-slide-up">
        <div class="ebook-popup-list" v-show="fontFamilyVisible">
            <div class="ebook-popup-title">
                <div class="ebook-popup-title-icon" @click="hide">
                    <span class="icon-down2"></span>
                </div>
                <span class="ebook-popup-title-text">{{$t('book.selectFont')}}</span>
            </div>
            <div class="ebook-popup-list-wrapper">
                <div class="ebook-popup-item" v-for="(item,index) in fontFamilyList" :key="index"
                     @click="setFontFamily(item.font)">
                    <div class="ebook-popup-item-text" :class="{'selected':isSelected(item)}">{{item.font}}</div>
                    <div class="ebook-popup-item-check" v-if="isSelected(item)">
                        <span class="icon-check"></span>
                    </div>
                </div>
            </div>
        </div>
    </transition>
</template>

<script>
  import { saveFontFamily } from '../../utils/localStorage'
  import { ebookMixin } from '../../utils/mixin'
  import { FONT_FAMILY } from '../../utils/book'

  export default {
    name: 'EbookSettingFontPopup',
    mixins: [ebookMixin],
    data () {
      return {
        fontFamilyList: FONT_FAMILY
      }
    },
    mounted () {

    },
    methods: {
      // 字体样式切换
      setFontFamily (font) {
        this.setDefaultFontFamily(font)
        // 存储LocalStorage
        saveFontFamily(this.fileName, font)
        if (font === 'Default') {
          this.currentBook.rendition.themes.font('Times New Roman')
        } else {
          this.currentBook.rendition.themes.font(font)
        }
      },
      // 判断显示样式
      isSelected (item) {
        return this.defaultFontFamily === item.font
      },
      // 隐藏选择字体面板
      hide () {
        this.setFontFamilyVisible(false)
      }
    }
  }
</script>

<style lang="scss" scoped>
    @import "../../assets/styles/global";

    .ebook-popup-list {
        position: absolute;
        bottom: 0;
        left: 0;
        z-index: 300;
        width: 100%;
        background: white;
        box-shadow: 0 px2rem(-4) px2rem(6) rgba(0, 0, 0, .1);

        .ebook-popup-title {
            position: relative;
            padding: px2rem(15);
            border-bottom: px2rem(1) solid #b8b9bb;
            text-align: center;
            @include center;

            .ebook-popup-title-icon {
                position: absolute;
                left: px2rem(15);
                top: 0;
                height: 100%;
                font-size: px2rem(16);
                font-weight: bold;
                @include center;
            }

            .ebook-popup-title-text {
                font-size: px2rem(14);
                font-weight: bold;
            }
        }

        .ebook-popup-list-wrapper {


            .ebook-popup-item {
                display: flex;
                padding: px2rem(15);

                .ebook-popup-item-text {
                    flex: 1;
                    font-size: px2rem(14);
                    text-align: left;

                    &.selected {
                        color: #346cb9;
                        font-weight: bold;
                    }

                }

                .ebook-popup-item-check {
                    flex: 1;
                    text-align: right;
                    font-size: px2rem(14);
                    font-weight: bold;
                    color: #346cb9;
                }
            }
        }
    }

</style>
